Weight of Orange Tube C8 OTA
Posted 16 May 2012 - 05:17 PM
I am seriously considering removing the forks and going to a iOptron Mini Tower or CG-5 type GOTO Mount for strictly Visual.
Posted 16 May 2012 - 07:14 PM
It will be in the neighborhood of 12.5# with a CG5 rail installed. A bit more with a D-series/CGE rail installed.
Posted 17 May 2012 - 02:17 AM
I forgot about a Rail. I guess the widest rail would be best to resist flexing.
Posted 18 May 2012 - 05:39 PM
Early G8s (Ultima type C8 on the early CG-5) came with a wonderful dovetail that had flanges like the CGEM 3" dovetail. This dovetail was drilled for the rear cell's 1.75" tapped accessory mounting holes. Later G8 optical tubes were drilled and tapped for the narrower and less substantial extruded 1.7" dovertail bar.
I like to machine the common 13" extruded bars so they fit the C8 tightly with no bridging. I often find the OT C8 optics have to be removed for cleaning and will take the opportunity to drill and tap the rear cell for a #10-24 screw to make mounting easier.